The new version was released this night and features, in addition to the usual security and bug fixes, a long awaited option — at least for me. It is now possible to choose GMail aka Google Mail as you default email application in the Application Settings dialog.
Until now users had to use self made scripts and batch files. For Windows users exists/existed the possibilty to auto-assign Firefox to use Gmail via the Google Talk Chat client.
Now, the steps to follow to get it all set up are quite easy:
Open the options/preferences dialog, go to the applications tab, look for mailto and change action to use gmail